I understand how you are feeling, I went through something similar a little while back. I ended up changing college course to something I enjoy more, although I dont have any long term plans either with what I will do once I leave. I also joined a few clubs with things im interested in. I found that if I just do as I pleased everything was alright. Hope things get better soon
I would definately consider, well it would depend were. There is loads of reason's that would be preventing, money for one, going and living in a different country isnt as easy as it seems(although that differs from each country), leaving all your friends and family behind and having to start again by myself etc. I'll be honest, I dont think I am resposible enough to do that just yet, I mean its more of a thing I'd imagine managing in my 20's even though I'd love to in the near future. I still have the rest of the year of college to finish.